Speaker
Description
The CANadian Rare isotope facility with Electron-Beam ion source (CANREB) at TRIUMF delivers beams of highly-charged ions of rare isotopes to experiments. The Electron Beam Ion source (EBIS) is an essential part of CANREB where ions are charge-bred by collisions with an electron beam. We present simulation results for the CANREB EBIS using TRAK (version 8.0 professional).
The EBIS geometry was modelled assuming cylindrical symmetry, with TRAK generating the EM field map based on currents and electrode potentials applied during commissioning. The calculated electron trajectories in the presence of the strong magnetic field (up to 6T), emittance and acceptance of the EBIS will be discussed as well as potential limitations of the system arising from these results. Breeding efficiencies were estimated using the CBSIM code. These simulations are aimed at a better understanding of ion motions and charge-state breeding inside the CANREB-EBIS. Results will be used to optimize beam injection and extraction, implement pulse stretching for the extracted ions and closed shell breeding.